libstdc++-v3/testsuite/22_locale/codecvt/utf8-char8_t.cc

   1 // Copyright (C) 2015-2023 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19 // { dg-require-cstdint "" }
  20 // { dg-options "-fchar8_t" }
  21
  22 #include <locale>
  23 #include <iterator>
  24 #include <string>
  25 #include <testsuite_hooks.h>
  26
  27 const char8_t expected[] = u8"£¥€";
  28 const std::size_t expected_len = std::char_traits<char8_t>::length(expected);
  29
  30 template<typename C>
  31 void test(const C* from)
  32 {
  33   auto len = std::char_traits<C>::length(from);
  34   std::mbstate_t state{};
  35   char8_t buf[16] = { };
  36   using test_type = std::codecvt<C, char8_t, std::mbstate_t>;
  37   const test_type& cvt = std::use_facet<test_type>(std::locale::classic());
  38   auto from_end = from + len;
  39   auto from_next = from;
  40   auto buf_end = std::end(buf);
  41   auto buf_next = buf;
  42   auto res = cvt.out(state, from, from_end, from_next, buf, buf_end, buf_next);
  43   VERIFY( res == std::codecvt_base::ok );
  44   VERIFY( from_next == from_end );
  45   VERIFY( (buf_next - buf) == expected_len );
  46   VERIFY( 0 == std::char_traits<char8_t>::compare(buf, expected, expected_len) );
  47
  48   C buf2[16];
  49   auto exp_end = expected + expected_len;
  50   auto exp_next = expected;
  51   auto buf2_end = std::end(buf2);
  52   auto buf2_next = buf2;
  53   res = cvt.in(state, expected, exp_end, exp_next, buf2, buf2_end, buf2_next);
  54   VERIFY( res == std::codecvt_base::ok );
  55   VERIFY( exp_next == exp_end );
  56   VERIFY( (buf2_next - buf2) == len );
  57   VERIFY( 0 == std::char_traits<C>::compare(buf2, from, len) );
  58 }
  59
  60 void
  61 test01()
  62 {
  63   test(u"£¥€");
  64 }
  65
  66 void
  67 test02()
  68 {
  69   test(U"£¥€");
  70 }
  71
  72 int
  73 main()
  74 {
  75   test01();
  76   test02();
  77 }